DIVISION OF ENTOMOLOGY 517 



SESSIONAL PAPER No. 16 



culture, the Provincial Entomologists and the libraries of the Universities and 

 Agricultural Colleges. In addition to the Review, the Bureau is continuing 

 to publish The Bulletin of Entomological Research, containing scientific papers 

 embodying the results of original investigations carried on in the British 

 Colonies. 



The problem of the prevention of the spread and also control of insect pests is 

 fundamentally one for international action and co-operative effort. It is, indeed, a 

 most fortunate thing that the British countries have been able in this matter to take 

 advantage of their mutual attachment and interests and to organize in a manner 

 which must ultimately be adopted by all countries of the world, as the prevention of 

 the spread of insect pests with the minimum interference in the interchange of 

 natural products can only be brought about by international co-operation. This is 

 now becoming more generally realized as indicated by the proposal of the Interna- 

 tional Institute of Agriculture at Rome to form an International Commission to 

 consider the whole subject. 



PUBLICATIONS. 



The different officers of the Division, both at headquarters and in the field, have 

 contributed scientific papers to entomological and other journals, and more popular 

 articles to the agricultural press. In addition, the following bulletins have been pub- 

 lished during the year: — 



' The Honey Bee. A guide to Apiculture in Canada,' by C. Gordon 

 Hewitt, 45 pp., 14 figs., (Bull. 69, of the Experimental Farms Branch). 



'Cutworms and Armyworms,' by Arthur Gibson, 29 pp., 10 figs., 1 pi. 

 (Bull. No. 10 of the Experimental Farms Branch). 



'The Control of Insect Pests in Canada,' by C. Gordon Hewitt, 13 pp. 

 (Bull. No. 9, Second Serves of the Experimental Farms Branch). 



1 The Large Larch Sawfly,' with an account of its parasites and other 

 natural enemies and means of control,' by C. Gordon Hewitt, 42 pp., 21 figs., 

 4 pis. (Bull. No. 10, Second Series, of the Experimental Farms Branch). 



1 Legislation in Canada to prevent the Introduction and Spread of Insect 

 Posts and Diseases destructive to vegetation, with Regulations regarding 

 importation of vegetation into Canada,' by C. Gordon Hewitt, 36 pp. (Bull. 

 No. 11, Second Series, of the Experimental Farms Branch). 



STAFF. 



The continued increase in our work, and necessary expansion, has necessarily 

 required an increase in the staff of the Division, and the following additions have 

 been made during the past year: — 



Mr. F. W. L. Sladen has been appointed Assistant Entomologist for Apiculture. 

 Mr. Sladen was one of the foremost bee-keepers in England and has previously visited 

 Canada and the United States; he has also studied the bees in India. His work on 

 queen-rearing has given him an international reputation and, in addition to his 

 book on Queen rearing in England, of which a second edition is now being published, 

 lie has published a number of important papers on the pollen collecting habits, etc., 

 of the bees. He has also made extensive studies of the wild bees or Bombi, so 

 i rnportant in the fertilization of certain of our clovers, and the results of his investi- 

 gations have been recently published in volume form in his book, The Humble-bee, 

 tls Life History and haw to domesticate it, with descriptions of all British species 

 uf Bombus and Psithyrus (Macmillan & Co.). Mr. Sladen's appointment has 



